A Python successor to the aerosol module of the OPAC model, named AeroMix, has been developed, with enhanced capabilities to better represent real atmospheric aerosol mixing scenarios. AeroMix’s performance in modeling aerosol mixing states has been evaluated against field measurements, substantiating its potential as a versatile aerosol optical model framework for next-generation algorithms to infer aerosol mixing states and chemical composition.

Dynamical downscaling of an NWP model is closely related to the parameterization of convection. This is an unique study on a very severe cyclonic storm OCKHI over the Arabian Sea in which we explore the impact of downscaling of grid resolution in COSMO regional NWP model and investigate the effect of explicit treatment of convection on the performance of model. Switching off the convection parameterization yield good values of CAPE but lead to poor performance in terms of rainfall simulations.